How can we calculate the concentration of 1000 tons of carbon dioxide in the air in PPM?

Dear All scientists; How can we calculate the concentration of CO2 emitted in the air in PPM? shall we use PPMv(Volume PPM) or Mass PPM is also acceptable? Regards

01 August 2019 7,464 4 View

How can I recall a modified citation style in Mendeley with the name I entered?

When I save as a modified style and change its name, the new style does not show up with the name I have entered for in the styles list. In stead, a general title like "APA-Saeideh" is built...

20 May 2019 6,622 6 View

Can I run GEE having two within factor variables?

I have one factor as time (3 time points) and the other as treatment( absorbable versus nonabsorbable Sutures that each of them were used on different sides of a scar) so two treatments had been...

08 June 2018 6,220 1 View

How can I make a teeth whitener in the chemistry lab?

How can I make a teeth whitener in the chemistry lab?

02 June 2018 6,306 3 View

Could anyone suggest a good way to dissolve lard for making a high fat diet?

I am trying to make a ketogenic diet using lard and wonder how to dissolve lard and have a solidify mix of carbohydrate+protein+ lard at the end for 1 litre?

29 May 2017 7,074 3 View

Any advice on symmetry solvents for freezing polymer blends?

Why high symmetry solvents are proper for freez polymer blends?

29 December 2015 3,684 3 View

Does anyone have any idea how to inhibit liquid loss inside the capillary tube?

I have two chambers, the inner contain a capillary tube and the outer chamber contains water to maintain the humidity. My problem is that when I fill the capillary tube (by capillary action) and I...

16 September 2015 1,293 7 View

I need suggestion about a suitable microRNA prediction tool which can let me do input a DNA/RNA sequence. Which is a suitable options available?

microRNA

07 May 2015 6,861 3 View

What is the best way to improve the yield of exosome extracted miRNA for NGS?

I extract miRNA from serum's exosomes and the yield of RNA is low for downstream experiments, Next Generation Sequencing. I have tried different protocols, Exoquick, UC, miRNeasy Qiagen, Nerogen,...

06 May 2015 548 2 View

No title

19 January 2015 4,924 7 View

What is the exact mechanism of the antimicrobial effect of local anesthetics?

The antimicrobial effect of local anesthetics has been known for more than 50 years, but it still seems to have an unclear mechanism of action. which bacteria? which concentration? etc etc. ....

27 February 2021 4,450 2 View

Uncertianiny in using dry or wet basis in mixing a sediment with fuel oil?

Hello I'm currently working on a topic related to studying the anaerobic biodegradation of TPH in marine sediments. In this work, sediment should be mixed with fuel oil to a concentration of 20 g...

24 February 2021 9,839 3 View

Experimental Design: How deal with pseudreplicates with immunological and clinical-chemical paramaeters?

Hello everybody, I am investigating the influence of a toxinon various clinical-chemical and haematological parameters in fish. I have three treatments (control, low dose, high dose) in my...

24 February 2021 1,243 1 View

Advice on growing lactobacillus species in the lab?

Hello everyone, For part of my PhD project, I'm hoping to grow some lactobacillus species in the lab so that I can create standard curves for a qPCR quantification of a faecal sample. However, I...

24 February 2021 3,157 6 View

Can the problems of overfitting be solved without cross validation?

For an overfit data set the cross validation error will be much bigger than the training error. Is it true or false?

23 February 2021 3,616 2 View

How to manage western blot for proteomics data validation?

Hi Everyone, I am a bigginer in western blotting and I am trying to use it for validation of my proteomics data. I have: two regulated proteins with molecular mass of 40 and 73 kDa one control...

23 February 2021 6,671 4 View

How to clean up TEM grid with plasma cleaner?

I need to clean the hydrocarbon contamination on the carbon substrate of TEM grid. However, I heard that substrate could be broken by the powerful plasma. My substrate is pure carbon, with ~3nm,...

23 February 2021 3,262 5 View

Can anyone provide an advice on running a validation study of a commercially available product in collaboration with the manufacturer?

We are planning to run a study validating a commercially available product (i.e. software) and while we initially planned to do it independently of the manufacturer, they heard about our intention...

17 February 2021 2,295 3 View

Which way will be better to give OGT inhibitors doses through intravenous or orally for pregnant female rats and concentration suggestion?

I'm planning to use ST078925 OGT inhibitor from TimTec (OGT-O-linked N-acetylglucosamine (GlcNAc) transferase) for female rats.

16 February 2021 7,850 2 View

What are the best cations for preparing competent cells, Ca2+ or Mg2+?

I have been reading various articles and most state that treatment with CaCl2 produces higher efficiency of transformation than MgCl2. Can anyone explain why Ca2+ is better than Mg2+ at...

16 February 2021 8,519 5 View